Add RLUtils class for managing RL/AI dashboard endpoints

- Implemented methods for fetching AI stats, training history, and recent experiences.
- Added functionality to set operation mode (MANUAL, AUTO, AI) with appropriate handling.
- Included helper methods for querying the database and sending JSON responses.
- Integrated model metadata extraction for visualization purposes.

data/input/dictionary/users.txt

@@ -1,3 +1,8 @@
+manager
 root
 admin
-bjorn
+db_audit
+dev
+user
+boss
+deploy